Type Alias CFAllocatorReleaseCallBack 

pub type CFAllocatorReleaseCallBack = Option<unsafe extern "C-unwind" fn(*const c_void)>;

Apple’s documentation

Aliased Type

pub enum CFAllocatorReleaseCallBack {
    None,
    Some(unsafe extern "C-unwind" fn(*const c_void)),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(*const c_void))

Some value of type T.